基于身份密码学安全性研究综述.pdf

ISSN 计算机研究与发展 1000—12391CN11-1777／TP of Researchand JournalComputer Development 基于身份密码学的安全性研究综述 胡 亮1 刘哲理1 孙‘涛1 刘 芳2 1(吉林大学计算机科学与技术学院长春 130012) 2(吉林大学数学学院长春 130012) (1iuzhelil978@163．corn) of on SurveySecurityIdentity—Based Cryptography Hu Lian91，LiuZhelil，SunTa01，andLiu Fan92 Scienceand 130012) 1(CollegeofComputer Technology，JilinUniversity，Changchun 130012) 2(CollegeofMathematics，JilinUniversity，Changchun Abstract becomeanewresearchdirectionof encryption(IBE)has public Nowadays，identity—based isthe for anIBEscheme．When most factorconstructing keyencryption，andsecurity important a are consideredthestandardofattack designingpublicencryptionscheme，securitygoalsusually by models．Andthen，thedefinitionof combinesboth andattackmodels．After security securitygoal the IBE authors theformalizeddefinitionofIBE and analyzing schemes，thepresent security proposed the with oftraditional alsosummarizethe provide comparisonsecurity publickeyencryption．They variousmathematical onwhichthe reliesand therelations assumptions security study among to rules securitiesandtransformationmethods assumptions．Furthermore，transformationamong reach aredescribed，anditis o